/**
* According to singleton design patter
* getIstance return an istance of the class
* or create one istance
*
* @access public
* @return mySession
*/
public static function getInstance($_MYSESSION_CONF = '')
{
if ($_MYSESSION_CONF === '') {
global $_MYSESSION_CONF;
}
if (!isset(self::$instance)) {
$c = __CLASS__;
self::$instance = new $c();
self::$instance->setUp($_MYSESSION_CONF);
}
return self::$instance;
}